mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 11:04:03 +02:00
27779065aa
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19812 3c298f89-4303-0410-b956-a3cf2f4a3e73
29 lines
917 B
Diff
29 lines
917 B
Diff
--- a/arch/mips/kernel/traps.c
|
|
+++ b/arch/mips/kernel/traps.c
|
|
@@ -1256,9 +1256,22 @@ void *set_except_vector(int n, void *add
|
|
|
|
exception_handlers[n] = handler;
|
|
if (n == 0 && cpu_has_divec) {
|
|
- *(u32 *)(ebase + 0x200) = 0x08000000 |
|
|
- (0x03ffffff & (handler >> 2));
|
|
- local_flush_icache_range(ebase + 0x200, ebase + 0x204);
|
|
+ if ((handler ^ (ebase + 4)) & 0xfc000000) {
|
|
+ /* lui k0, 0x0000 */
|
|
+ *(u32 *)(ebase + 0x200) = 0x3c1a0000 | (handler >> 16);
|
|
+ /* ori k0, 0x0000 */
|
|
+ *(u32 *)(ebase + 0x204) =
|
|
+ 0x375a0000 | (handler & 0xffff);
|
|
+ /* jr k0 */
|
|
+ *(u32 *)(ebase + 0x208) = 0x03400008;
|
|
+ /* nop */
|
|
+ *(u32 *)(ebase + 0x20C) = 0x00000000;
|
|
+ flush_icache_range(ebase + 0x200, ebase + 0x210);
|
|
+ } else {
|
|
+ *(u32 *)(ebase + 0x200) =
|
|
+ 0x08000000 | (0x03ffffff & (handler >> 2));
|
|
+ flush_icache_range(ebase + 0x200, ebase + 0x204);
|
|
+ }
|
|
}
|
|
return (void *)old_handler;
|
|
}
|